Genome evidence needs both coverage arithmetic and physical addresses. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Coverage is reads times length over genome size
The training read budget is 30 reads of 100 bases over a 1000 base genome, so coverage is 3.
C=30⋅100/1000=3
The physical chip still needs addresses
The chip side has 5 rows by 4 columns, so it has 20 physical addresses.